隐蔽观察者现象 4) conceal[英][kən'si:l] [美][kən'sil] 隐蔽 1. The significance ofconcealed work,the main forms ofconcealing,causes of problems concerningconcealed work,as well as means dealing with them are expounded. 阐述隐蔽工程的重要性,工程隐蔽的主要形式,工程隐蔽容易出现问题的原因...